Device for truing fruit-jar covers



J. HUG DEVICE FOR TRUING FRUIT. JAR COVERS Filed Sept. 6; 1923 Patented Jan. 6, 1925.

UNITED STATES JOHN HUG, OF AMES,

DEVICE on TRUING FRUIT-JAR covers.

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To it may concern:

Be it known that I, JOHN HUG, a citizen of the United States, and a resident of Ames, in the county of Story and State of Iowa, have invented a certain new and useful Device for Truing F ruit-J ar Covers, of which the following is a specification.

It is well known that the metal screw tops or covers for ordinary fruit jars, like those used for instance 011 the well-known Mason jars, have an annular flange, which sometimes becomes bent out of shape in use.

It is desirable that these flanges be true and smooth when fruit or vegetables or the like are put into the jars, so that the flanges may snugly fit the rubber gasket on the neck of the jar at all points.

My invention relates to a device for truing fruit jar covers by smoothing out these flanges.

More particularly, it is my object to provide in a device of the kind mentioned a suitable supporting bracket having rotatably mounted thereon a cover receiving and holding member provided with a base or flange against which the flange on the fruit jar cover may rest, and to provide means for rotating said member and to provide a lever controlled device for pressing the cover flange against the flange or base on the holder during the rotation of the holder.

With these and other objects in view, my invention consists in the construction, arrangement and combination of the various parts of my device, whereby the objects contemplated are attained, as hereinafter more fully set forth, ointed out in my claim, and illustrated in t e accompanying drawings, in which:

Figure 1 shows a front elevation of a de vice embodying my invention.

Figure 2 shows a side elevation of the same; and

Figure 3 shows a vertical, sectional view through a jar cover of the type adapted to be used in connection with my truing device.

In the accompanying drawings, I have used the reference numeral 1 to indicate generally a supporting bracket having at its upper end a journal 1 for a shaft 5 on which is a crank 7 carrying the handle 6.

On the opposite end of the shaft 5 is an annular base or flange 2 on which is a support or holder 2 for a fruit jar cover 12.

The support 2 is provided with screw threads 2 on which the cover 12 may be snugly against the base or flange 2 In the outer face of the holder or support 2, there is an annular groove 2", which may receive a gasket 2 of rubber or other suitable material to bear against the porcelain lining member 14 of the cover 12.

At the lower end of the bracket 1 is a horizontal arm l in which is mounted a sciew 8 having a swivel plate 9 at its upper en Spaced above the arm 1' is a corresponding gripping arm 1 which coacts with the screw 8 and plate 9 to form a clamp, whereby the device may be mounted on a table or the like.

Pivotally mounted at some convenient point for instance at 10 on the arm 1 is a lever arm 3 mounted on which is a roller or disc 4 designed to coact with the base or flange 2 for truing the flange 13 of the cover 12.

In the practical use of my improved de vice for truing fruit jar covers, the cover 12 is screwed onto the support 2 until the flange 13 rests against the base or flange 2 The operator then grasps the lever or handle 3 at one end and presses the roller 4 against the outer face of the flange 13 and then grasps the handle 6 and rotates the shaft 5, whereupon the flange13 is rolled down and then pressed firmly against the flange or base 2*, thus smoothing out the flange 13 and taking out any uneven or rough places therein.

It will be noted that the shapes of the parts are such that the wall of the jar cover is turned or pressed down and the flange 13 is then pressed out against the base 2*.

When the flange 13 has thus been trued, it will fit snugly against the rubber gasket on the neck of thefruit jar, doing away c ed u t h lan e of th w-r tina with the likelihood of air leakage.

My device is of simple and inexpensive construction and can be used for quickly and easily and thoroughly smoothing and truing flanges of fruit jar covers.

It may be mentioned that the lever 3 is illustrated as mounted in a certain position in the drawings, but it is my intention to support the lever or its equivalent at any suitable point and to use the roller 4 or some equivalent, if the use of such equivalents seems desirable in practical manufacturing.

I therefore do not desire to limit my claim V to the exact form or arrangement of the parts herein shown, but intend to cover by my claim, any modified forms of structure or use of mechanical equivalents, Which may 5 be reasonably included Within their scope.

I claim as my invention:

In a device of the class described, a bracket having a clamping means thereon, a shaft rotatably mounted in said bracket, a

10 crank arm on said shaft, a threaded cover holder on said shaft, having a base against Which the flange on the cover mounted on said holder may abut, a resilient member on said cover holder against which the cover may abut, a pivoted lever and a member thereon adapted to engage the flange on the cover and press it against said base when the cover holder is rotated- Des Moines, Iowa, August 29, 1928.

' JOHN HUG. 

